[PATCH 5.4 214/215] drm/i915/gvt: Fix two CFL MMIO handling caused by regression.

From: Greg Kroah-Hartman
Date: Mon Jul 20 2020 - 12:05:16 EST


From: Colin Xu <colin.xu@xxxxxxxxx>

commit fccd0f7cf4d532674d727c7f204f038456675dee upstream.

D_CFL was incorrectly removed for:
GAMT_CHKN_BIT_REG
GEN9_CTX_PREEMPT_REG

V2: Update commit message.
V3: Rebase and split Fixes and mis-handled MMIO.

Fixes: 43226e6fe798 (drm/i915/gvt: replaced register address with name)
Reviewed-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
Signed-off-by: Colin Xu <colin.xu@xxxxxxxxx>
Signed-off-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
Link: http://patchwork.freedesktop.org/patch/msgid/20200601030638.16002-1-colin.xu@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/gpu/drm/i915/gvt/handlers.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -3103,8 +3103,8 @@ static int init_skl_mmio_info(struct int
MMIO_DFH(GEN9_WM_CHICKEN3, D_SKL_PLUS, F_MODE_MASK | F_CMD_ACCESS,
NULL, NULL);

- MMIO_D(GAMT_CHKN_BIT_REG, D_KBL);
- MMIO_D(GEN9_CTX_PREEMPT_REG, D_KBL | D_SKL);
+ MMIO_D(GAMT_CHKN_BIT_REG, D_KBL | D_CFL);
+ MMIO_D(GEN9_CTX_PREEMPT_REG, D_SKL_PLUS);

return 0;
}